Perhaps you should try some spelling variations:
tran thanh » ban thanh, quan thanh
hanh trinh » canh tranh, hanh chinh
nhung cong » dung cong, thong cong, hang cong
van thanh » ban thanh, van tuan
trinh thi » trinh tai, dinh thi, trinh tu
thi nhung » thi nang, thi hong, thi huong
cong dan » cong san, cong tan, huong dan
toan cau » toan cao, toan ban, toan tai
toan tap » toan ban

You may be able to get more results by adjusting your search query.

• If you are trying to use Boolean operators, they must be ALL CAPS: doan ((tran thanh) OR (van thanh)) - hanh trinh thi nhung cong dan ((toan cau) OR (toan tap))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "doan ((tran thanh) OR (van thanh)) - hanh trinh thi nhung cong dan ((toan cau) or (toan tap))~".
• Adding a wildcard symbol may retrieve word variants: doan ((tran thanh) OR (van thanh)) - hanh trinh thi nhung cong dan ((toan cau) or (toan tap))*.